Ammunition and explosives – Igniting devices and systems – Initiating devices
Patent
1988-12-12
1990-10-16
Jordan, Charles T.
Ammunition and explosives
Igniting devices and systems
Initiating devices
1022756, F42D 1045
Patent
active
049627082
ABSTRACT:
This invention relates to safety and simplicity in initiating high explosives. The new method uses a hybrid system for electro-mechanically initiating either fast burning detonating cord or slower burning plastic initiating tube or fires electric blasting caps.
The subject initiating system consists of four (4) basic components: a capacitor discharge power supply connected to a standoff cable reel, a wiring standoff cable spooled out from said reel to a solenoid housing.
Within the housing, the system is again broken down into sub-components. A connector plug and socket connects the standoff cable to a pulse type electrical solenoid. The solenoid is positioned so that when said solenoid is electrically actuated the solenoid's plunger or firing pin strikes a shot shell primer which is inserted into a coupling device. The explosive force of the shot shell primer when fired generates adaquate pyrotechnic energy to start the burning process of the initiating line, which, in turn, initiates a blasting cap, explosive primer or both, resulting in high explosive detonation. In the electric mode this instrument fires electric blasting caps in a conventional manner using the same electronic capacitor discharge power supply.
Low energy level is referencing a shot shell primer (low energy level) to an electric blasting cap (high energy level).
REFERENCES:
patent: 3250034 (1966-05-01), Simmons
patent: 3301185 (1967-01-01), Foster
patent: 3395641 (1968-08-01), Frost
patent: 3553877 (1971-01-01), Welch et al.
patent: 4261127 (1981-04-01), Karkkainen
patent: 4381711 (1983-05-01), Lawrence
patent: 4674047 (1987-06-01), Tyler et al.
patent: 4817530 (1989-04-01), Florin
patent: 4825765 (1989-05-01), Ochi et al.
Explosives and Demolitions--Engineer Field Manual; War Dept., FM 5-25; Jan. 1942; pp. 16-20.
Rainwater Percy R.
Snyder Richard N.
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